Old gas heater:
Rinnai REU-1618W-RS
New gas heater:
Macro MA-20OD
📍 Botannia
3 Dec 2024
Our licensed gas service team conducted a detailed inspection of the Rinnai Gas Heater Powered by Citygas. Several critical issues were discovered:
Melted Motherboard – Signs of electrical overheating made the control system unsafe.
Leaking Heat Exchanger – Corrosion and water leakage indicated severe internal damage.
Rusty Gas Valve – The existing valve was corroded, stiff, and unsafe for continued operation.
Deteriorated Plumbing Connections – The union and stop valve of the water pipe showed extensive rust, increasing the risk of leaks or failure.
With these conditions, repairing the unit was neither practical nor cost-effective. Full replacement of the gas heater system was recommended.
At Homeone Engineering, all gas heater replacements are carried out in strict compliance with Gas Supply Regulations and PUB regulations. For this project, we provided a complete end-to-end solution, including gas, plumbing, and electrical works.
Supply and installation of a new gas heater.
Gas valve and stop valve replacement for safe operation.
Partial pipe works redone to meet PUB compliance standards.
Supply of PUB-regulated fittings for long-term safety.
Installation of a new control panel.
Connection of new electric wiring to the isolator.
Installation of protective equipotential bonding to comply with gas supply safety codes.
Full testing and commissioning of the new system.
Issuance of test certificate by a Licensed Gas Service Worker, in accordance with the Gas Supply Regulation—a legal requirement for all gas heater installations in Singapore.
1-Year Homeone Engineering Warranty covering workmanship.
1-Year Manufacturer Warranty for the new water tank.
A gas leak in any water heating system is a critical hazard that must not be ignored. With a defective Macro Gas Heater Powered by Citygas, the risks of CO poisoning, fire, and explosion become significantly high. Replacing the faulty unit with a new, compliant heater not only ensures safety but also protects insurance coverage, as unauthorized or unsafe installations can void most policies.
By engaging Homeone’s Licensed Gas Service Workers, homeowners are assured of safety, compliance, and long-term reliability.
Project Location: Botannia
Upon completion, you receive a Statement of Gas Appliances Testing Certificate immediately. This critical document confirms:
✓ Installation complies with Singapore Standard SS 608:2024 – Code of Practice for Gas Installations
✓ Installation meets Gas Supply Regulations 21 requirements
✓ The gas heater and entire house gas piping have been tested
✓ No gas escapes exist and the system is safe to use
Insurance policies do not cover any damage or injury caused by regulated work carried out by an unlicensed handyman without a valid Statement of Gas Appliances Testing Certificate. Working with licensed professionals protects both your safety and your financial interests.
The Botannia unit had multiple critical failures at once — melted motherboard, leaking heat exchanger, corroded gas valve, and rusted plumbing. Each fault alone would justify serious concern; together, they meant the heater was no longer safe to operate and partial repair would have left unresolved risks elsewhere in the system.
Full replacement was the only responsible option. The new installation was carried out under the Gas Supply Regulations and PUB requirements, certified by a Licensed Gas Service Worker, and backed by a Homeone workmanship warranty and manufacturer warranty on the unit. The homeowner now has a documented, compliant, and insurable installation — not just a working heater.
